H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 357
H8S-2350
Manufacturer Part Number
H8S-2350
Description
16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.H8S-2350.pdf
(1025 pages)
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Section 9 I/O Ports
Section 9 I/O Ports
9.1
Overview
The H8S/2350 Group has 12 I/O ports (ports 1 to 3, 5, 6, and A to G), and one input-only port
(port 4).
Table 9.1 summarizes the port functions. The pins of each port also have other functions.
Each port includes a data direction register (DDR) that controls input/output (not provided for the
input-only port), a data register (DR) that stores output data, and a port register (PORT) used to
read the pin states.
Ports A to E in the H8S/2351 have a built-in pull-up MOS function, and in addition to DR and
DDR, have a MOS input pull-up control register (PCR) to control the on/off state of MOS input
pull-up.
Port 3, and port A in the H8S/2351, have an open-drain control register (ODR) that controls the
on/off state of the output buffer PMOS.
Ports A to E can drive a single TTL load and 90 pF capacitive load, and ports 1 to 3, 5, 6, F, and G
can drive a single TTL load and 30 pF capacitive load. All the I/O ports can drive a Darlington
transistor when in output mode. Ports 1, A, B, and C can drive an LED (10 mA sink current).
Port 2, and pins 6
to 6
and A
to A
, are Schmitt-triggered inputs.
4
7
4
7
For block diagrams of the ports see appendix C, I/O Port Block Diagrams.
Rev. 3.00 Sep 15, 2006 page 323 of 988
REJ09B0330-0300
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